Fix #20891: opengl animation render could mess up the view.

The problem was that wmPushMatrix/wmOrtho/.. and similar functions did not
work well for offscreen rendering. It would have been possible to make a
fake subwindow for this, but I decided to just remove this extra layer as
it does not seem to have much purpose and has been quite confusing when
trying to fix other bugs. The relevant matrices are already stored in
RegionView3D so there will be no increase in calls to glGetFloat, which may
have been a performance reason to use this system in the past.

1 files changed, 4 insertions, 7 deletions

diff --git a/source/blender/editors/space_view3d/view3d_view.c b/source/blender/editors/space_view3d/view3d_view.c
index c4f5f37c5e5..f74978fd317 100644
--- a/source/blender/editors/space_view3d/view3d_view.c
+++ b/source/blender/editors/space_view3d/view3d_view.c
@@ -104,9 +104,9 @@ void view3d_operator_needs_opengl(const bContext *C)
 		
 		wmSubWindowSet(CTX_wm_window(C), ar->swinid);
 		glMatrixMode(GL_PROJECTION);
-		wmLoadMatrix(rv3d->winmat);
+		glLoadMatrixf(rv3d->winmat);
 		glMatrixMode(GL_MODELVIEW);
-		wmLoadMatrix(rv3d->viewmat);
+		glLoadMatrixf(rv3d->viewmat);
 	}
 }
 
@@ -1074,13 +1074,10 @@ void setwinmatrixview3d(ARegion *ar, View3D *v3d, rctf *rect)		/* rect: for pick
 		else wmFrustum(x1, x2, y1, y2, clipsta, clipend);
 	}
 
-	/* not sure what this was for? (ton) */
-	glMatrixMode(GL_PROJECTION);
-	wmGetMatrix(rv3d->winmat);
-	glMatrixMode(GL_MODELVIEW);
+	/* update matrix in 3d view region */
+	glGetFloatv(GL_PROJECTION_MATRIX, (float*)rv3d->winmat);
 }
 
-
 static void obmat_to_viewmat(View3D *v3d, RegionView3D *rv3d, Object *ob, short smooth)
 {
 	float bmat[4][4];